What kind of business? Do you need to file a separate Business return like a Single Member LLC that is a S corp or a 1120 or 1065 LLC or partnership return? Or just self employment/sole proprietor on Schedule C in your personal return?
For personal returns you can buy any Desktop program. All the Desktop programs have the same forms. You just get more help and guidance in the higher versions. So Home & Business would have the most help. You can buy the last 3 years of Turbo Tax here,
https://turbotax.intuit.com/personal-taxes/past-years-products/
You will need a full Windows or Mac to install it on.
If you need to file a separate business return, Buy the prior year Business downloads here
https://turbotax.intuit.com/personal-taxes/past-years-products/
Turbo Tax Business is only available for Windows.
